void generateToAir(Procedure& procedure, unsigned optLevel)
{
TimingScope timingScope("generateToAir");
if (shouldDumpIR(B3Mode) && !shouldDumpIRAtEachPhase(B3Mode)) {
dataLog("Initial B3:\n");
dataLog(procedure);
}
// We don't require the incoming IR to have predecessors computed.
procedure.resetReachability();
if (shouldValidateIR())
validate(procedure);
if (optLevel >= 1) {
reduceDoubleToFloat(procedure);
reduceStrength(procedure);
eliminateCommonSubexpressions(procedure);
inferSwitches(procedure);
duplicateTails(procedure);
fixSSA(procedure);
foldPathConstants(procedure);
// FIXME: Add more optimizations here.
// https://bugs.webkit.org/show_bug.cgi?id=150507
}
lowerMacros(procedure);
if (optLevel >= 1) {
reduceStrength(procedure);
// FIXME: Add more optimizations here.
// https://bugs.webkit.org/show_bug.cgi?id=150507
}
lowerMacrosAfterOptimizations(procedure);
legalizeMemoryOffsets(procedure);
moveConstants(procedure);
// FIXME: We should run pureCSE here to clean up some platform specific changes from the previous phases.
// https://bugs.webkit.org/show_bug.cgi?id=164873
if (shouldValidateIR())
validate(procedure);
// If we're doing super verbose dumping, the phase scope of any phase will already do a dump.
// Note that lowerToAir() acts like a phase in this regard.
if (shouldDumpIR(B3Mode) && !shouldDumpIRAtEachPhase(B3Mode)) {
dataLog("B3 after ", procedure.lastPhaseName(), ", before generation:\n");
dataLog(procedure);
}
lowerToAir(procedure);
}
void duplicateTails(Procedure& proc)
{
PhaseScope phaseScope(proc, "duplicateTails");
DuplicateTails duplicateTails(proc);
duplicateTails.run();
}
